As the transfer season hots up, we look at the recruitment structures at the 20 clubs who will be playing in the 2017-18 top flightArsenal’s chief scout is one of the club’s longest-serving employees. Steve Rowley’s reputation was forged when he spotted an 11-year-old Tony Adams while scouting part-time. Rowley went full-time when George Graham was Arsenal manager, and was promoted to chief scout when Arsène Wenger arrived in 1996. He heads a global team and the scouting department has been influenced by the data analytics company StatDNA that Arsenal bought a few years ago with a nod to the Moneyball principles that had been successful in the US. Arsenal’s scouting is under scrutiny with last summer’s main arrivals – Shkodran Mustafi, Granit Xhaka and Lucas Pérez – all enduring difficult periods in their first Premier League campaigns.&nb...